| /* |
| * Texas Instruments Ethernet Switch Driver |
| * |
| * Copyright (C) 2012 Texas Instruments |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation version 2. |
| * |
| * This program is distributed "as is" WITHOUT ANY WARRANTY of any |
| * kind, whether express or implied; without even the implied warranty |
| * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/io.h> |
| #include <linux/clk.h> |
| #include <linux/timer.h> |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/irqreturn.h> |
| #include <linux/interrupt.h> |
| #include <linux/if_ether.h> |
| #include <linux/etherdevice.h> |
| #include <linux/netdevice.h> |
| #include <linux/net_tstamp.h> |
| #include <linux/phy.h> |
| #include <linux/workqueue.h> |
| #include <linux/delay.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/of.h> |
| #include <linux/of_net.h> |
| #include <linux/of_device.h> |
| #include <linux/if_vlan.h> |
| |
| #include <linux/platform_data/cpsw.h> |
| |
| #include "cpsw_ale.h" |
| #include "cpts.h" |
| #include "davinci_cpdma.h" |
| |
| #define CPSW_DEBUG (NETIF_MSG_HW | NETIF_MSG_WOL | \ |
| NETIF_MSG_DRV | NETIF_MSG_LINK | \ |
| NETIF_MSG_IFUP | NETIF_MSG_INTR | \ |
| NETIF_MSG_PROBE | NETIF_MSG_TIMER | \ |
| NETIF_MSG_IFDOWN | NETIF_MSG_RX_ERR | \ |
| NETIF_MSG_TX_ERR | NETIF_MSG_TX_DONE | \ |
| NETIF_MSG_PKTDATA | NETIF_MSG_TX_QUEUED | \ |
| NETIF_MSG_RX_STATUS) |
| |
| #define cpsw_info(priv, type, format, ...) \ |
| do { \ |
| if (netif_msg_##type(priv) && net_ratelimit()) \ |
| dev_info(priv->dev, format, ## __VA_ARGS__); \ |
| } while (0) |
| |
| #define cpsw_err(priv, type, format, ...) \ |
| do { \ |
| if (netif_msg_##type(priv) && net_ratelimit()) \ |
| dev_err(priv->dev, format, ## __VA_ARGS__); \ |
| } while (0) |
| |
| #define cpsw_dbg(priv, type, format, ...) \ |
| do { \ |
| if (netif_msg_##type(priv) && net_ratelimit()) \ |
| dev_dbg(priv->dev, format, ## __VA_ARGS__); \ |
| } while (0) |
| |
| #define cpsw_notice(priv, type, format, ...) \ |
| do { \ |
| if (netif_msg_##type(priv) && net_ratelimit()) \ |
| dev_notice(priv->dev, format, ## __VA_ARGS__); \ |
| } while (0) |
| |
| #define ALE_ALL_PORTS 0x7 |
| |
| #define CPSW_MAJOR_VERSION(reg) (reg >> 8 & 0x7) |
| #define CPSW_MINOR_VERSION(reg) (reg & 0xff) |
| #define CPSW_RTL_VERSION(reg) ((reg >> 11) & 0x1f) |
| |
| #define CPSW_VERSION_1 0x19010a |
| #define CPSW_VERSION_2 0x19010c |
| |
| #define HOST_PORT_NUM 0 |
| #define SLIVER_SIZE 0x40 |
| |
| #define CPSW1_HOST_PORT_OFFSET 0x028 |
| #define CPSW1_SLAVE_OFFSET 0x050 |
| #define CPSW1_SLAVE_SIZE 0x040 |
| #define CPSW1_CPDMA_OFFSET 0x100 |
| #define CPSW1_STATERAM_OFFSET 0x200 |
| #define CPSW1_CPTS_OFFSET 0x500 |
| #define CPSW1_ALE_OFFSET 0x600 |
| #define CPSW1_SLIVER_OFFSET 0x700 |
| |
| #define CPSW2_HOST_PORT_OFFSET 0x108 |
| #define CPSW2_SLAVE_OFFSET 0x200 |
| #define CPSW2_SLAVE_SIZE 0x100 |
| #define CPSW2_CPDMA_OFFSET 0x800 |
| #define CPSW2_STATERAM_OFFSET 0xa00 |
| #define CPSW2_CPTS_OFFSET 0xc00 |
| #define CPSW2_ALE_OFFSET 0xd00 |
| #define CPSW2_SLIVER_OFFSET 0xd80 |
| #define CPSW2_BD_OFFSET 0x2000 |
| |
| #define CPDMA_RXTHRESH 0x0c0 |
| #define CPDMA_RXFREE 0x0e0 |
| #define CPDMA_TXHDP 0x00 |
| #define CPDMA_RXHDP 0x20 |
| #define CPDMA_TXCP 0x40 |
| #define CPDMA_RXCP 0x60 |
| |
| #define CPSW_POLL_WEIGHT 64 |
| #define CPSW_MIN_PACKET_SIZE 60 |
| #define CPSW_MAX_PACKET_SIZE (1500 + 14 + 4 + 4) |
| |
| #define RX_PRIORITY_MAPPING 0x76543210 |
| #define TX_PRIORITY_MAPPING 0x33221100 |
| #define CPDMA_TX_PRIORITY_MAP 0x76543210 |
| |
| #define CPSW_VLAN_AWARE BIT(1) |
| #define CPSW_ALE_VLAN_AWARE 1 |
| |
| #define CPSW_FIFO_NORMAL_MODE (0 << 15) |
| #define CPSW_FIFO_DUAL_MAC_MODE (1 << 15) |
| #define CPSW_FIFO_RATE_LIMIT_MODE (2 << 15) |
| |
| #define CPSW_INTPACEEN (0x3f << 16) |
| #define CPSW_INTPRESCALE_MASK (0x7FF << 0) |
| #define CPSW_CMINTMAX_CNT 63 |
| #define CPSW_CMINTMIN_CNT 2 |
| #define CPSW_CMINTMAX_INTVL (1000 / CPSW_CMINTMIN_CNT) |
| #define CPSW_CMINTMIN_INTVL ((1000 / CPSW_CMINTMAX_CNT) + 1) |
| |
| #define cpsw_enable_irq(priv) \ |
| do { \ |
| u32 i; \ |
| for (i = 0; i < priv->num_irqs; i++) \ |
| enable_irq(priv->irqs_table[i]); \ |
| } while (0); |
| #define cpsw_disable_irq(priv) \ |
| do { \ |
| u32 i; \ |
| for (i = 0; i < priv->num_irqs; i++) \ |
| disable_irq_nosync(priv->irqs_table[i]); \ |
| } while (0); |
| |
| #define cpsw_slave_index(priv) \ |
| ((priv->data.dual_emac) ? priv->emac_port : \ |
| priv->data.active_slave) |
| |
| static int debug_level; |
| module_param(debug_level, int, 0); |
| MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)"); |
| |
| static int ale_ageout = 10; |
| module_param(ale_ageout, int, 0); |
| MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)"); |
| |
| static int rx_packet_max = CPSW_MAX_PACKET_SIZE; |
| module_param(rx_packet_max, int, 0); |
| MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)"); |
| |
| struct cpsw_wr_regs { |
| u32 id_ver; |
| u32 soft_reset; |
| u32 control; |
| u32 int_control; |
| u32 rx_thresh_en; |
| u32 rx_en; |
| u32 tx_en; |
| u32 misc_en; |
| u32 mem_allign1[8]; |
| u32 rx_thresh_stat; |
| u32 rx_stat; |
| u32 tx_stat; |
| u32 misc_stat; |
| u32 mem_allign2[8]; |
| u32 rx_imax; |
| u32 tx_imax; |
| |
| }; |
| |
| struct cpsw_ss_regs { |
| u32 id_ver; |
| u32 control; |
| u32 soft_reset; |
| u32 stat_port_en; |
| u32 ptype; |
| u32 soft_idle; |
| u32 thru_rate; |
| u32 gap_thresh; |
| u32 tx_start_wds; |
| u32 flow_control; |
| u32 vlan_ltype; |
| u32 ts_ltype; |
| u32 dlr_ltype; |
| }; |
| |
| /* CPSW_PORT_V1 */ |
| #define CPSW1_MAX_BLKS 0x00 /* Maximum FIFO Blocks */ |
| #define CPSW1_BLK_CNT 0x04 /* FIFO Block Usage Count (Read Only) */ |
| #define CPSW1_TX_IN_CTL 0x08 /* Transmit FIFO Control */ |
| #define CPSW1_PORT_VLAN 0x0c /* VLAN Register */ |
| #define CPSW1_TX_PRI_MAP 0x10 /* Tx Header Priority to Switch Pri Mapping */ |
| #define CPSW1_TS_CTL 0x14 /* Time Sync Control */ |
| #define CPSW1_TS_SEQ_LTYPE 0x18 /* Time Sync Sequence ID Offset and Msg Type */ |
| #define CPSW1_TS_VLAN 0x1c /* Time Sync VLAN1 and VLAN2 */ |
| |
| /* CPSW_PORT_V2 */ |
| #define CPSW2_CONTROL 0x00 /* Control Register */ |
| #define CPSW2_MAX_BLKS 0x08 /* Maximum FIFO Blocks */ |
| #define CPSW2_BLK_CNT 0x0c /* FIFO Block Usage Count (Read Only) */ |
| #define CPSW2_TX_IN_CTL 0x10 /* Transmit FIFO Control */ |
| #define CPSW2_PORT_VLAN 0x14 /* VLAN Register */ |
| #define CPSW2_TX_PRI_MAP 0x18 /* Tx Header Priority to Switch Pri Mapping */ |
| #define CPSW2_TS_SEQ_MTYPE 0x1c /* Time Sync Sequence ID Offset and Msg Type */ |
| |
| /* CPSW_PORT_V1 and V2 */ |
| #define SA_LO 0x20 /* CPGMAC_SL Source Address Low */ |
| #define SA_HI 0x24 /* CPGMAC_SL Source Address High */ |
| #define SEND_PERCENT 0x28 /* Transmit Queue Send Percentages */ |
| |
| /* CPSW_PORT_V2 only */ |
| #define RX_DSCP_PRI_MAP0 0x30 /* Rx DSCP Priority to Rx Packet Mapping */ |
| #define RX_DSCP_PRI_MAP1 0x34 /* Rx DSCP Priority to Rx Packet Mapping */ |
| #define RX_DSCP_PRI_MAP2 0x38 /* Rx DSCP Priority to Rx Packet Mapping */ |
| #define RX_DSCP_PRI_MAP3 0x3c /* Rx DSCP Priority to Rx Packet Mapping */ |
| #define RX_DSCP_PRI_MAP4 0x40 /* Rx DSCP Priority to Rx Packet Mapping */ |
| #define RX_DSCP_PRI_MAP5 0x44 /* Rx DSCP Priority to Rx Packet Mapping */ |
| #define RX_DSCP_PRI_MAP6 0x48 /* Rx DSCP Priority to Rx Packet Mapping */ |
| #define RX_DSCP_PRI_MAP7 0x4c /* Rx DSCP Priority to Rx Packet Mapping */ |
| |
| /* Bit definitions for the CPSW2_CONTROL register */ |
| #define PASS_PRI_TAGGED (1<<24) /* Pass Priority Tagged */ |
| #define VLAN_LTYPE2_EN (1<<21) /* VLAN LTYPE 2 enable */ |
| #define VLAN_LTYPE1_EN (1<<20) /* VLAN LTYPE 1 enable */ |
| #define DSCP_PRI_EN (1<<16) /* DSCP Priority Enable */ |
| #define TS_320 (1<<14) /* Time Sync Dest Port 320 enable */ |
| #define TS_319 (1<<13) /* Time Sync Dest Port 319 enable */ |
| #define TS_132 (1<<12) /* Time Sync Dest IP Addr 132 enable */ |
| #define TS_131 (1<<11) /* Time Sync Dest IP Addr 131 enable */ |
| #define TS_130 (1<<10) /* Time Sync Dest IP Addr 130 enable */ |
| #define TS_129 (1<<9) /* Time Sync Dest IP Addr 129 enable */ |
| #define TS_BIT8 (1<<8) /* ts_ttl_nonzero? */ |
| #define TS_ANNEX_D_EN (1<<4) /* Time Sync Annex D enable */ |
| #define TS_LTYPE2_EN (1<<3) /* Time Sync LTYPE 2 enable */ |
| #define TS_LTYPE1_EN (1<<2) /* Time Sync LTYPE 1 enable */ |
| #define TS_TX_EN (1<<1) /* Time Sync Transmit Enable */ |
| #define TS_RX_EN (1<<0) /* Time Sync Receive Enable */ |
| |
| #define CTRL_TS_BITS \ |
| (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 | TS_BIT8 | \ |
| TS_ANNEX_D_EN | TS_LTYPE1_EN) |
| |
| #define CTRL_ALL_TS_MASK (CTRL_TS_BITS | TS_TX_EN | TS_RX_EN) |
| #define CTRL_TX_TS_BITS (CTRL_TS_BITS | TS_TX_EN) |
| #define CTRL_RX_TS_BITS (CTRL_TS_BITS | TS_RX_EN) |
| |
| /* Bit definitions for the CPSW2_TS_SEQ_MTYPE register */ |
| #define TS_SEQ_ID_OFFSET_SHIFT (16) /* Time Sync Sequence ID Offset */ |
| #define TS_SEQ_ID_OFFSET_MASK (0x3f) |
| #define TS_MSG_TYPE_EN_SHIFT (0) /* Time Sync Message Type Enable */ |
| #define TS_MSG_TYPE_EN_MASK (0xffff) |
| |
| /* The PTP event messages - Sync, Delay_Req, Pdelay_Req, and Pdelay_Resp. */ |
| #define EVENT_MSG_BITS ((1<<0) | (1<<1) | (1<<2) | (1<<3)) |
| |
| /* Bit definitions for the CPSW1_TS_CTL register */ |
| #define CPSW_V1_TS_RX_EN BIT(0) |
| #define CPSW_V1_TS_TX_EN BIT(4) |
| #define CPSW_V1_MSG_TYPE_OFS 16 |
| |
| /* Bit definitions for the CPSW1_TS_SEQ_LTYPE register */ |
| #define CPSW_V1_SEQ_ID_OFS_SHIFT 16 |
| |
| struct cpsw_host_regs { |
| u32 max_blks; |
| u32 blk_cnt; |
| u32 tx_in_ctl; |
| u32 port_vlan; |
| u32 tx_pri_map; |
| u32 cpdma_tx_pri_map; |
| u32 cpdma_rx_chan_map; |
| }; |
| |
| struct cpsw_sliver_regs { |
| u32 id_ver; |
| u32 mac_control; |
| u32 mac_status; |
| u32 soft_reset; |
| u32 rx_maxlen; |
| u32 __reserved_0; |
| u32 rx_pause; |
| u32 tx_pause; |
| u32 __reserved_1; |
| u32 rx_pri_map; |
| }; |
| |
| struct cpsw_slave { |
| void __iomem *regs; |
| struct cpsw_sliver_regs __iomem *sliver; |
| int slave_num; |
| u32 mac_control; |
| struct cpsw_slave_data *data; |
| struct phy_device *phy; |
| struct net_device *ndev; |
| u32 port_vlan; |
| u32 open_stat; |
| }; |
| |
| static inline u32 slave_read(struct cpsw_slave *slave, u32 offset) |
| { |
| return __raw_readl(slave->regs + offset); |
| } |
| |
| static inline void slave_write(struct cpsw_slave *slave, u32 val, u32 offset) |
| { |
| __raw_writel(val, slave->regs + offset); |
| } |
| |
| struct cpsw_priv { |
| spinlock_t lock; |
| struct platform_device *pdev; |
| struct net_device *ndev; |
| struct resource *cpsw_res; |
| struct resource *cpsw_wr_res; |
| struct napi_struct napi; |
| struct device *dev; |
| struct cpsw_platform_data data; |
| struct cpsw_ss_regs __iomem *regs; |
| struct cpsw_wr_regs __iomem *wr_regs; |
| struct cpsw_host_regs __iomem *host_port_regs; |
| u32 msg_enable; |
| u32 version; |
| u32 coal_intvl; |
| u32 bus_freq_mhz; |
| struct net_device_stats stats; |
| int rx_packet_max; |
| int host_port; |
| struct clk *clk; |
| u8 mac_addr[ETH_ALEN]; |
| struct cpsw_slave *slaves; |
| struct cpdma_ctlr *dma; |
| struct cpdma_chan *txch, *rxch; |
| struct cpsw_ale *ale; |
| /* snapshot of IRQ numbers */ |
| u32 irqs_table[4]; |
| u32 num_irqs; |
| struct cpts *cpts; |
| u32 emac_port; |
| }; |
| |
| #define napi_to_priv(napi) container_of(napi, struct cpsw_priv, napi) |
| #define for_each_slave(priv, func, arg...) \ |
| do { \ |
| int idx; \ |
| if (priv->data.dual_emac) \ |
| (func)((priv)->slaves + priv->emac_port, ##arg);\ |
| else \ |
| for (idx = 0; idx < (priv)->data.slaves; idx++) \ |
| (func)((priv)->slaves + idx, ##arg); \ |
| } while (0) |
| #define cpsw_get_slave_ndev(priv, __slave_no__) \ |
| (priv->slaves[__slave_no__].ndev) |
| #define cpsw_get_slave_priv(priv, __slave_no__) \ |
| ((priv->slaves[__slave_no__].ndev) ? \ |
| netdev_priv(priv->slaves[__slave_no__].ndev) : NULL) \ |
| |
| #define cpsw_dual_emac_src_port_detect(status, priv, ndev, skb) \ |
| do { \ |
| if (!priv->data.dual_emac) \ |
| break; \ |
| if (CPDMA_RX_SOURCE_PORT(status) == 1) { \ |
| ndev = cpsw_get_slave_ndev(priv, 0); \ |
| priv = netdev_priv(ndev); \ |
| skb->dev = ndev; \ |
| } else if (CPDMA_RX_SOURCE_PORT(status) == 2) { \ |
| ndev = cpsw_get_slave_ndev(priv, 1); \ |
| priv = netdev_priv(ndev); \ |
| skb->dev = ndev; \ |
| } \ |
| } while (0) |
| #define cpsw_add_mcast(priv, addr) \ |
| do { \ |
| if (priv->data.dual_emac) { \ |
| struct cpsw_slave *slave = priv->slaves + \ |
| priv->emac_port; \ |
| int slave_port = cpsw_get_slave_port(priv, \ |
| slave->slave_num); \ |
| cpsw_ale_add_mcast(priv->ale, addr, \ |
| 1 << slave_port | 1 << priv->host_port, \ |
| ALE_VLAN, slave->port_vlan, 0); \ |
| } else { \ |
| cpsw_ale_add_mcast(priv->ale, addr, \ |
| ALE_ALL_PORTS << priv->host_port, \ |
| 0, 0, 0); \ |
| } \ |
| } while (0) |
| |
| static inline int cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num) |
| { |
| if (priv->host_port == 0) |
| return slave_num + 1; |
| else |
| return slave_num; |
| } |
| |
| static void cpsw_ndo_set_rx_mode(struct net_device *ndev) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| |
| if (ndev->flags & IFF_PROMISC) { |
| /* Enable promiscuous mode */ |
| dev_err(priv->dev, "Ignoring Promiscuous mode\n"); |
| return; |
| } |
| |
| /* Clear all mcast from ALE */ |
| cpsw_ale_flush_multicast(priv->ale, ALE_ALL_PORTS << priv->host_port); |
| |
| if (!netdev_mc_empty(ndev)) { |
| struct netdev_hw_addr *ha; |
| |
| /* program multicast address list into ALE register */ |
| netdev_for_each_mc_addr(ha, ndev) { |
| cpsw_add_mcast(priv, (u8 *)ha->addr); |
| } |
| } |
| } |
| |
| static void cpsw_intr_enable(struct cpsw_priv *priv) |
| { |
| __raw_writel(0xFF, &priv->wr_regs->tx_en); |
| __raw_writel(0xFF, &priv->wr_regs->rx_en); |
| |
| cpdma_ctlr_int_ctrl(priv->dma, true); |
| return; |
| } |
| |
| static void cpsw_intr_disable(struct cpsw_priv *priv) |
| { |
| __raw_writel(0, &priv->wr_regs->tx_en); |
| __raw_writel(0, &priv->wr_regs->rx_en); |
| |
| cpdma_ctlr_int_ctrl(priv->dma, false); |
| return; |
| } |
| |
| void cpsw_tx_handler(void *token, int len, int status) |
| { |
| struct sk_buff *skb = token; |
| struct net_device *ndev = skb->dev; |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| |
| /* Check whether the queue is stopped due to stalled tx dma, if the |
| * queue is stopped then start the queue as we have free desc for tx |
| */ |
| if (unlikely(netif_queue_stopped(ndev))) |
| netif_start_queue(ndev); |
| cpts_tx_timestamp(priv->cpts, skb); |
| priv->stats.tx_packets++; |
| priv->stats.tx_bytes += len; |
| dev_kfree_skb_any(skb); |
| } |
| |
| void cpsw_rx_handler(void *token, int len, int status) |
| { |
| struct sk_buff *skb = token; |
| struct net_device *ndev = skb->dev; |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| int ret = 0; |
| |
| cpsw_dual_emac_src_port_detect(status, priv, ndev, skb); |
| |
| /* free and bail if we are shutting down */ |
| if (unlikely(!netif_running(ndev)) || |
| unlikely(!netif_carrier_ok(ndev))) { |
| dev_kfree_skb_any(skb); |
| return; |
| } |
| if (likely(status >= 0)) { |
| skb_put(skb, len); |
| cpts_rx_timestamp(priv->cpts, skb); |
| skb->protocol = eth_type_trans(skb, ndev); |
| netif_receive_skb(skb); |
| priv->stats.rx_bytes += len; |
| priv->stats.rx_packets++; |
| skb = NULL; |
| } |
| |
| if (unlikely(!netif_running(ndev))) { |
| if (skb) |
| dev_kfree_skb_any(skb); |
| return; |
| } |
| |
| if (likely(!skb)) { |
| skb = netdev_alloc_skb_ip_align(ndev, priv->rx_packet_max); |
| if (WARN_ON(!skb)) |
| return; |
| |
| ret = cpdma_chan_submit(priv->rxch, skb, skb->data, |
| skb_tailroom(skb), 0, GFP_KERNEL); |
| } |
| WARN_ON(ret < 0); |
| } |
| |
| static irqreturn_t cpsw_interrupt(int irq, void *dev_id) |
| { |
| struct cpsw_priv *priv = dev_id; |
| |
| if (likely(netif_running(priv->ndev))) { |
| cpsw_intr_disable(priv); |
| cpsw_disable_irq(priv); |
| napi_schedule(&priv->napi); |
| } else { |
| priv = cpsw_get_slave_priv(priv, 1); |
| if (likely(priv) && likely(netif_running(priv->ndev))) { |
| cpsw_intr_disable(priv); |
| cpsw_disable_irq(priv); |
| napi_schedule(&priv->napi); |
| } |
| } |
| return IRQ_HANDLED; |
| } |
| |
| static int cpsw_poll(struct napi_struct *napi, int budget) |
| { |
| struct cpsw_priv *priv = napi_to_priv(napi); |
| int num_tx, num_rx; |
| |
| num_tx = cpdma_chan_process(priv->txch, 128); |
| if (num_tx) |
| cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX); |
| |
| num_rx = cpdma_chan_process(priv->rxch, budget); |
| if (num_rx < budget) { |
| napi_complete(napi); |
| cpsw_intr_enable(priv); |
| cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX); |
| cpsw_enable_irq(priv); |
| } |
| |
| if (num_rx || num_tx) |
| cpsw_dbg(priv, intr, "poll %d rx, %d tx pkts\n", |
| num_rx, num_tx); |
| |
| return num_rx; |
| } |
| |
| static inline void soft_reset(const char *module, void __iomem *reg) |
| { |
| unsigned long timeout = jiffies + HZ; |
| |
| __raw_writel(1, reg); |
| do { |
| cpu_relax(); |
| } while ((__raw_readl(reg) & 1) && time_after(timeout, jiffies)); |
| |
| WARN(__raw_readl(reg) & 1, "failed to soft-reset %s\n", module); |
| } |
| |
| #define mac_hi(mac) (((mac)[0] << 0) | ((mac)[1] << 8) | \ |
| ((mac)[2] << 16) | ((mac)[3] << 24)) |
| #define mac_lo(mac) (((mac)[4] << 0) | ((mac)[5] << 8)) |
| |
| static void cpsw_set_slave_mac(struct cpsw_slave *slave, |
| struct cpsw_priv *priv) |
| { |
| slave_write(slave, mac_hi(priv->mac_addr), SA_HI); |
| slave_write(slave, mac_lo(priv->mac_addr), SA_LO); |
| } |
| |
| static void _cpsw_adjust_link(struct cpsw_slave *slave, |
| struct cpsw_priv *priv, bool *link) |
| { |
| struct phy_device *phy = slave->phy; |
| u32 mac_control = 0; |
| u32 slave_port; |
| |
| if (!phy) |
| return; |
| |
| slave_port = cpsw_get_slave_port(priv, slave->slave_num); |
| |
| if (phy->link) { |
| mac_control = priv->data.mac_control; |
| |
| /* enable forwarding */ |
| cpsw_ale_control_set(priv->ale, slave_port, |
| ALE_PORT_STATE, ALE_PORT_STATE_FORWARD); |
| |
| if (phy->speed == 1000) |
| mac_control |= BIT(7); /* GIGABITEN */ |
| if (phy->duplex) |
| mac_control |= BIT(0); /* FULLDUPLEXEN */ |
| |
| /* set speed_in input in case RMII mode is used in 100Mbps */ |
| if (phy->speed == 100) |
| mac_control |= BIT(15); |
| |
| *link = true; |
| } else { |
| mac_control = 0; |
| /* disable forwarding */ |
| cpsw_ale_control_set(priv->ale, slave_port, |
| ALE_PORT_STATE, ALE_PORT_STATE_DISABLE); |
| } |
| |
| if (mac_control != slave->mac_control) { |
| phy_print_status(phy); |
| __raw_writel(mac_control, &slave->sliver->mac_control); |
| } |
| |
| slave->mac_control = mac_control; |
| } |
| |
| static void cpsw_adjust_link(struct net_device *ndev) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| bool link = false; |
| |
| for_each_slave(priv, _cpsw_adjust_link, priv, &link); |
| |
| if (link) { |
| netif_carrier_on(ndev); |
| if (netif_running(ndev)) |
| netif_wake_queue(ndev); |
| } else { |
| netif_carrier_off(ndev); |
| netif_stop_queue(ndev); |
| } |
| } |
| |
| static int cpsw_get_coalesce(struct net_device *ndev, |
| struct ethtool_coalesce *coal) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| |
| coal->rx_coalesce_usecs = priv->coal_intvl; |
| return 0; |
| } |
| |
| static int cpsw_set_coalesce(struct net_device *ndev, |
| struct ethtool_coalesce *coal) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| u32 int_ctrl; |
| u32 num_interrupts = 0; |
| u32 prescale = 0; |
| u32 addnl_dvdr = 1; |
| u32 coal_intvl = 0; |
| |
| if (!coal->rx_coalesce_usecs) |
| return -EINVAL; |
| |
| coal_intvl = coal->rx_coalesce_usecs; |
| |
| int_ctrl = readl(&priv->wr_regs->int_control); |
| prescale = priv->bus_freq_mhz * 4; |
| |
| if (coal_intvl < CPSW_CMINTMIN_INTVL) |
| coal_intvl = CPSW_CMINTMIN_INTVL; |
| |
| if (coal_intvl > CPSW_CMINTMAX_INTVL) { |
| /* Interrupt pacer works with 4us Pulse, we can |
| * throttle further by dilating the 4us pulse. |
| */ |
| addnl_dvdr = CPSW_INTPRESCALE_MASK / prescale; |
| |
| if (addnl_dvdr > 1) { |
| prescale *= addnl_dvdr; |
| if (coal_intvl > (CPSW_CMINTMAX_INTVL * addnl_dvdr)) |
| coal_intvl = (CPSW_CMINTMAX_INTVL |
| * addnl_dvdr); |
| } else { |
| addnl_dvdr = 1; |
| coal_intvl = CPSW_CMINTMAX_INTVL; |
| } |
| } |
| |
| num_interrupts = (1000 * addnl_dvdr) / coal_intvl; |
| writel(num_interrupts, &priv->wr_regs->rx_imax); |
| writel(num_interrupts, &priv->wr_regs->tx_imax); |
| |
| int_ctrl |= CPSW_INTPACEEN; |
| int_ctrl &= (~CPSW_INTPRESCALE_MASK); |
| int_ctrl |= (prescale & CPSW_INTPRESCALE_MASK); |
| writel(int_ctrl, &priv->wr_regs->int_control); |
| |
| cpsw_notice(priv, timer, "Set coalesce to %d usecs.\n", coal_intvl); |
| if (priv->data.dual_emac) { |
| int i; |
| |
| for (i = 0; i < priv->data.slaves; i++) { |
| priv = netdev_priv(priv->slaves[i].ndev); |
| priv->coal_intvl = coal_intvl; |
| } |
| } else { |
| priv->coal_intvl = coal_intvl; |
| } |
| |
| return 0; |
| } |
| |
| static inline int __show_stat(char *buf, int maxlen, const char *name, u32 val) |
| { |
| static char *leader = "........................................"; |
| |
| if (!val) |
| return 0; |
| else |
| return snprintf(buf, maxlen, "%s %s %10d\n", name, |
| leader + strlen(name), val); |
| } |
| |
| static int cpsw_common_res_usage_state(struct cpsw_priv *priv) |
| { |
| u32 i; |
| u32 usage_count = 0; |
| |
| if (!priv->data.dual_emac) |
| return 0; |
| |
| for (i = 0; i < priv->data.slaves; i++) |
| if (priv->slaves[i].open_stat) |
| usage_count++; |
| |
| return usage_count; |
| } |
| |
| static inline int cpsw_tx_packet_submit(struct net_device *ndev, |
| struct cpsw_priv *priv, struct sk_buff *skb) |
| { |
| if (!priv->data.dual_emac) |
| return cpdma_chan_submit(priv->txch, skb, skb->data, |
| skb->len, 0, GFP_KERNEL); |
| |
| if (ndev == cpsw_get_slave_ndev(priv, 0)) |
| return cpdma_chan_submit(priv->txch, skb, skb->data, |
| skb->len, 1, GFP_KERNEL); |
| else |
| return cpdma_chan_submit(priv->txch, skb, skb->data, |
| skb->len, 2, GFP_KERNEL); |
| } |
| |
| static inline void cpsw_add_dual_emac_def_ale_entries( |
| struct cpsw_priv *priv, struct cpsw_slave *slave, |
| u32 slave_port) |
| { |
| u32 port_mask = 1 << slave_port | 1 << priv->host_port; |
| |
| if (priv->version == CPSW_VERSION_1) |
| slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN); |
| else |
| slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN); |
| cpsw_ale_add_vlan(priv->ale, slave->port_vlan, port_mask, |
| port_mask, port_mask, 0); |
| cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast, |
| port_mask, ALE_VLAN, slave->port_vlan, 0); |
| cpsw_ale_add_ucast(priv->ale, priv->mac_addr, |
| priv->host_port, ALE_VLAN, slave->port_vlan); |
| } |
| |
| static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv) |
| { |
| char name[32]; |
| u32 slave_port; |
| |
| sprintf(name, "slave-%d", slave->slave_num); |
| |
| soft_reset(name, &slave->sliver->soft_reset); |
| |
| /* setup priority mapping */ |
| __raw_writel(RX_PRIORITY_MAPPING, &slave->sliver->rx_pri_map); |
| |
| switch (priv->version) { |
| case CPSW_VERSION_1: |
| slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP); |
| break; |
| case CPSW_VERSION_2: |
| slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP); |
| break; |
| } |
| |
| /* setup max packet size, and mac address */ |
| __raw_writel(priv->rx_packet_max, &slave->sliver->rx_maxlen); |
| cpsw_set_slave_mac(slave, priv); |
| |
| slave->mac_control = 0; /* no link yet */ |
| |
| slave_port = cpsw_get_slave_port(priv, slave->slave_num); |
| |
| if (priv->data.dual_emac) |
| cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port); |
| else |
| cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast, |
| 1 << slave_port, 0, 0, ALE_MCAST_FWD_2); |
| |
| slave->phy = phy_connect(priv->ndev, slave->data->phy_id, |
| &cpsw_adjust_link, slave->data->phy_if); |
| if (IS_ERR(slave->phy)) { |
| dev_err(priv->dev, "phy %s not found on slave %d\n", |
| slave->data->phy_id, slave->slave_num); |
| slave->phy = NULL; |
| } else { |
| dev_info(priv->dev, "phy found : id is : 0x%x\n", |
| slave->phy->phy_id); |
| phy_start(slave->phy); |
| } |
| } |
| |
| static inline void cpsw_add_default_vlan(struct cpsw_priv *priv) |
| { |
| const int vlan = priv->data.default_vlan; |
| const int port = priv->host_port; |
| u32 reg; |
| int i; |
| |
| reg = (priv->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN : |
| CPSW2_PORT_VLAN; |
| |
| writel(vlan, &priv->host_port_regs->port_vlan); |
| |
| for (i = 0; i < priv->data.slaves; i++) |
| slave_write(priv->slaves + i, vlan, reg); |
| |
| cpsw_ale_add_vlan(priv->ale, vlan, ALE_ALL_PORTS << port, |
| ALE_ALL_PORTS << port, ALE_ALL_PORTS << port, |
| (ALE_PORT_1 | ALE_PORT_2) << port); |
| } |
| |
| static void cpsw_init_host_port(struct cpsw_priv *priv) |
| { |
| u32 control_reg; |
| u32 fifo_mode; |
| |
| /* soft reset the controller and initialize ale */ |
| soft_reset("cpsw", &priv->regs->soft_reset); |
| cpsw_ale_start(priv->ale); |
| |
| /* switch to vlan unaware mode */ |
| cpsw_ale_control_set(priv->ale, priv->host_port, ALE_VLAN_AWARE, |
| CPSW_ALE_VLAN_AWARE); |
| control_reg = readl(&priv->regs->control); |
| control_reg |= CPSW_VLAN_AWARE; |
| writel(control_reg, &priv->regs->control); |
| fifo_mode = (priv->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE : |
| CPSW_FIFO_NORMAL_MODE; |
| writel(fifo_mode, &priv->host_port_regs->tx_in_ctl); |
| |
| /* setup host port priority mapping */ |
| __raw_writel(CPDMA_TX_PRIORITY_MAP, |
| &priv->host_port_regs->cpdma_tx_pri_map); |
| __raw_writel(0, &priv->host_port_regs->cpdma_rx_chan_map); |
| |
| cpsw_ale_control_set(priv->ale, priv->host_port, |
| ALE_PORT_STATE, ALE_PORT_STATE_FORWARD); |
| |
| if (!priv->data.dual_emac) { |
| cpsw_ale_add_ucast(priv->ale, priv->mac_addr, priv->host_port, |
| 0, 0); |
| cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast, |
| 1 << priv->host_port, 0, 0, ALE_MCAST_FWD_2); |
| } |
| } |
| |
| static int cpsw_ndo_open(struct net_device *ndev) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| int i, ret; |
| u32 reg; |
| |
| if (!cpsw_common_res_usage_state(priv)) |
| cpsw_intr_disable(priv); |
| netif_carrier_off(ndev); |
| |
| pm_runtime_get_sync(&priv->pdev->dev); |
| |
| reg = priv->version; |
| |
| dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n", |
| CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg), |
| CPSW_RTL_VERSION(reg)); |
| |
| /* initialize host and slave ports */ |
| if (!cpsw_common_res_usage_state(priv)) |
| cpsw_init_host_port(priv); |
| for_each_slave(priv, cpsw_slave_open, priv); |
| |
| /* Add default VLAN */ |
| if (!priv->data.dual_emac) |
| cpsw_add_default_vlan(priv); |
| |
| if (!cpsw_common_res_usage_state(priv)) { |
| /* setup tx dma to fixed prio and zero offset */ |
| cpdma_control_set(priv->dma, CPDMA_TX_PRIO_FIXED, 1); |
| cpdma_control_set(priv->dma, CPDMA_RX_BUFFER_OFFSET, 0); |
| |
| /* disable priority elevation */ |
| __raw_writel(0, &priv->regs->ptype); |
| |
| /* enable statistics collection only on all ports */ |
| __raw_writel(0x7, &priv->regs->stat_port_en); |
| |
| if (WARN_ON(!priv->data.rx_descs)) |
| priv->data.rx_descs = 128; |
| |
| for (i = 0; i < priv->data.rx_descs; i++) { |
| struct sk_buff *skb; |
| |
| ret = -ENOMEM; |
| skb = netdev_alloc_skb_ip_align(priv->ndev, |
| priv->rx_packet_max); |
| if (!skb) |
| break; |
| ret = cpdma_chan_submit(priv->rxch, skb, skb->data, |
| skb_tailroom(skb), 0, GFP_KERNEL); |
| if (WARN_ON(ret < 0)) |
| break; |
| } |
| /* continue even if we didn't manage to submit all |
| * receive descs |
| */ |
| cpsw_info(priv, ifup, "submitted %d rx descriptors\n", i); |
| } |
| |
| /* Enable Interrupt pacing if configured */ |
| if (priv->coal_intvl != 0) { |
| struct ethtool_coalesce coal; |
| |
| coal.rx_coalesce_usecs = (priv->coal_intvl << 4); |
| cpsw_set_coalesce(ndev, &coal); |
| } |
| |
| cpdma_ctlr_start(priv->dma); |
| cpsw_intr_enable(priv); |
| napi_enable(&priv->napi); |
| cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX); |
| cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX); |
| |
| if (priv->data.dual_emac) |
| priv->slaves[priv->emac_port].open_stat = true; |
| return 0; |
| } |
| |
| static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_priv *priv) |
| { |
| if (!slave->phy) |
| return; |
| phy_stop(slave->phy); |
| phy_disconnect(slave->phy); |
| slave->phy = NULL; |
| } |
| |
| static int cpsw_ndo_stop(struct net_device *ndev) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| |
| cpsw_info(priv, ifdown, "shutting down cpsw device\n"); |
| netif_stop_queue(priv->ndev); |
| napi_disable(&priv->napi); |
| netif_carrier_off(priv->ndev); |
| |
| if (cpsw_common_res_usage_state(priv) <= 1) { |
| cpsw_intr_disable(priv); |
| cpdma_ctlr_int_ctrl(priv->dma, false); |
| cpdma_ctlr_stop(priv->dma); |
| cpsw_ale_stop(priv->ale); |
| } |
| for_each_slave(priv, cpsw_slave_stop, priv); |
| pm_runtime_put_sync(&priv->pdev->dev); |
| if (priv->data.dual_emac) |
| priv->slaves[priv->emac_port].open_stat = false; |
| return 0; |
| } |
| |
| static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb, |
| struct net_device *ndev) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| int ret; |
| |
| ndev->trans_start = jiffies; |
| |
| if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) { |
| cpsw_err(priv, tx_err, "packet pad failed\n"); |
| priv->stats.tx_dropped++; |
| return NETDEV_TX_OK; |
| } |
| |
| if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP && |
| priv->cpts->tx_enable) |
| skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
| |
| skb_tx_timestamp(skb); |
| |
| ret = cpsw_tx_packet_submit(ndev, priv, skb); |
| if (unlikely(ret != 0)) { |
| cpsw_err(priv, tx_err, "desc submit failed\n"); |
| goto fail; |
| } |
| |
| /* If there is no more tx desc left free then we need to |
| * tell the kernel to stop sending us tx frames. |
| */ |
| if (unlikely(cpdma_check_free_tx_desc(priv->txch))) |
| netif_stop_queue(ndev); |
| |
| return NETDEV_TX_OK; |
| fail: |
| priv->stats.tx_dropped++; |
| netif_stop_queue(ndev); |
| return NETDEV_TX_BUSY; |
| } |
| |
| static void cpsw_ndo_change_rx_flags(struct net_device *ndev, int flags) |
| { |
| /* |
| * The switch cannot operate in promiscuous mode without substantial |
| * headache. For promiscuous mode to work, we would need to put the |
| * ALE in bypass mode and route all traffic to the host port. |
| * Subsequently, the host will need to operate as a "bridge", learn, |
| * and flood as needed. For now, we simply complain here and |
| * do nothing about it :-) |
| */ |
| if ((flags & IFF_PROMISC) && (ndev->flags & IFF_PROMISC)) |
| dev_err(&ndev->dev, "promiscuity ignored!\n"); |
| |
| /* |
| * The switch cannot filter multicast traffic unless it is configured |
| * in "VLAN Aware" mode. Unfortunately, VLAN awareness requires a |
| * whole bunch of additional logic that this driver does not implement |
| * at present. |
| */ |
| if ((flags & IFF_ALLMULTI) && !(ndev->flags & IFF_ALLMULTI)) |
| dev_err(&ndev->dev, "multicast traffic cannot be filtered!\n"); |
| } |
| |
| #ifdef CONFIG_TI_CPTS |
| |
| static void cpsw_hwtstamp_v1(struct cpsw_priv *priv) |
| { |
| struct cpsw_slave *slave = &priv->slaves[priv->data.active_slave]; |
| u32 ts_en, seq_id; |
| |
| if (!priv->cpts->tx_enable && !priv->cpts->rx_enable) { |
| slave_write(slave, 0, CPSW1_TS_CTL); |
| return; |
| } |
| |
| seq_id = (30 << CPSW_V1_SEQ_ID_OFS_SHIFT) | ETH_P_1588; |
| ts_en = EVENT_MSG_BITS << CPSW_V1_MSG_TYPE_OFS; |
| |
| if (priv->cpts->tx_enable) |
| ts_en |= CPSW_V1_TS_TX_EN; |
| |
| if (priv->cpts->rx_enable) |
| ts_en |= CPSW_V1_TS_RX_EN; |
| |
| slave_write(slave, ts_en, CPSW1_TS_CTL); |
| slave_write(slave, seq_id, CPSW1_TS_SEQ_LTYPE); |
| } |
| |
| static void cpsw_hwtstamp_v2(struct cpsw_priv *priv) |
| { |
| struct cpsw_slave *slave; |
| u32 ctrl, mtype; |
| |
| if (priv->data.dual_emac) |
| slave = &priv->slaves[priv->emac_port]; |
| else |
| slave = &priv->slaves[priv->data.active_slave]; |
| |
| ctrl = slave_read(slave, CPSW2_CONTROL); |
| ctrl &= ~CTRL_ALL_TS_MASK; |
| |
| if (priv->cpts->tx_enable) |
| ctrl |= CTRL_TX_TS_BITS; |
| |
| if (priv->cpts->rx_enable) |
| ctrl |= CTRL_RX_TS_BITS; |
| |
| mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS; |
| |
| slave_write(slave, mtype, CPSW2_TS_SEQ_MTYPE); |
| slave_write(slave, ctrl, CPSW2_CONTROL); |
| __raw_writel(ETH_P_1588, &priv->regs->ts_ltype); |
| } |
| |
| static int cpsw_hwtstamp_ioctl(struct net_device *dev, struct ifreq *ifr) |
| { |
| struct cpsw_priv *priv = netdev_priv(dev); |
| struct cpts *cpts = priv->cpts; |
| struct hwtstamp_config cfg; |
| |
| if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) |
| return -EFAULT; |
| |
| /* reserved for future extensions */ |
| if (cfg.flags) |
| return -EINVAL; |
| |
| switch (cfg.tx_type) { |
| case HWTSTAMP_TX_OFF: |
| cpts->tx_enable = 0; |
| break; |
| case HWTSTAMP_TX_ON: |
| cpts->tx_enable = 1; |
| break; |
| default: |
| return -ERANGE; |
| } |
| |
| switch (cfg.rx_filter) { |
| case HWTSTAMP_FILTER_NONE: |
| cpts->rx_enable = 0; |
| break; |
| case HWTSTAMP_FILTER_ALL: |
| case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: |
| case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: |
| case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: |
| return -ERANGE; |
| case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: |
| case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: |
| case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: |
| case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: |
| case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: |
| case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: |
| case HWTSTAMP_FILTER_PTP_V2_EVENT: |
| case HWTSTAMP_FILTER_PTP_V2_SYNC: |
| case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: |
| cpts->rx_enable = 1; |
| cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; |
| break; |
| default: |
| return -ERANGE; |
| } |
| |
| switch (priv->version) { |
| case CPSW_VERSION_1: |
| cpsw_hwtstamp_v1(priv); |
| break; |
| case CPSW_VERSION_2: |
| cpsw_hwtstamp_v2(priv); |
| break; |
| default: |
| return -ENOTSUPP; |
| } |
| |
| return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0; |
| } |
| |
| #endif /*CONFIG_TI_CPTS*/ |
| |
| static int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd) |
| { |
| if (!netif_running(dev)) |
| return -EINVAL; |
| |
| #ifdef CONFIG_TI_CPTS |
| if (cmd == SIOCSHWTSTAMP) |
| return cpsw_hwtstamp_ioctl(dev, req); |
| #endif |
| return -ENOTSUPP; |
| } |
| |
| static void cpsw_ndo_tx_timeout(struct net_device *ndev) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| |
| cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n"); |
| priv->stats.tx_errors++; |
| cpsw_intr_disable(priv); |
| cpdma_ctlr_int_ctrl(priv->dma, false); |
| cpdma_chan_stop(priv->txch); |
| cpdma_chan_start(priv->txch); |
| cpdma_ctlr_int_ctrl(priv->dma, true); |
| cpsw_intr_enable(priv); |
| cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX); |
| cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX); |
| |
| } |
| |
| static struct net_device_stats *cpsw_ndo_get_stats(struct net_device *ndev) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| return &priv->stats; |
| } |
| |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| static void cpsw_ndo_poll_controller(struct net_device *ndev) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| |
| cpsw_intr_disable(priv); |
| cpdma_ctlr_int_ctrl(priv->dma, false); |
| cpsw_interrupt(ndev->irq, priv); |
| cpdma_ctlr_int_ctrl(priv->dma, true); |
| cpsw_intr_enable(priv); |
| cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX); |
| cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX); |
| |
| } |
| #endif |
| |
| static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv, |
| unsigned short vid) |
| { |
| int ret; |
| |
| ret = cpsw_ale_add_vlan(priv->ale, vid, |
| ALE_ALL_PORTS << priv->host_port, |
| 0, ALE_ALL_PORTS << priv->host_port, |
| (ALE_PORT_1 | ALE_PORT_2) << priv->host_port); |
| if (ret != 0) |
| return ret; |
| |
| ret = cpsw_ale_add_ucast(priv->ale, priv->mac_addr, |
| priv->host_port, ALE_VLAN, vid); |
| if (ret != 0) |
| goto clean_vid; |
| |
| ret = cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast, |
| ALE_ALL_PORTS << priv->host_port, |
| ALE_VLAN, vid, 0); |
| if (ret != 0) |
| goto clean_vlan_ucast; |
| return 0; |
| |
| clean_vlan_ucast: |
| cpsw_ale_del_ucast(priv->ale, priv->mac_addr, |
| priv->host_port, ALE_VLAN, vid); |
| clean_vid: |
| cpsw_ale_del_vlan(priv->ale, vid, 0); |
| return ret; |
| } |
| |
| static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev, |
| unsigned short vid) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| |
| if (vid == priv->data.default_vlan) |
| return 0; |
| |
| dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid); |
| return cpsw_add_vlan_ale_entry(priv, vid); |
| } |
| |
| static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev, |
| unsigned short vid) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| int ret; |
| |
| if (vid == priv->data.default_vlan) |
| return 0; |
| |
| dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid); |
| ret = cpsw_ale_del_vlan(priv->ale, vid, 0); |
| if (ret != 0) |
| return ret; |
| |
| ret = cpsw_ale_del_ucast(priv->ale, priv->mac_addr, |
| priv->host_port, ALE_VLAN, vid); |
| if (ret != 0) |
| return ret; |
| |
| return cpsw_ale_del_mcast(priv->ale, priv->ndev->broadcast, |
| 0, ALE_VLAN, vid); |
| } |
| |
| static const struct net_device_ops cpsw_netdev_ops = { |
| .ndo_open = cpsw_ndo_open, |
| .ndo_stop = cpsw_ndo_stop, |
| .ndo_start_xmit = cpsw_ndo_start_xmit, |
| .ndo_change_rx_flags = cpsw_ndo_change_rx_flags, |
| .ndo_do_ioctl = cpsw_ndo_ioctl, |
| .ndo_validate_addr = eth_validate_addr, |
| .ndo_change_mtu = eth_change_mtu, |
| .ndo_tx_timeout = cpsw_ndo_tx_timeout, |
| .ndo_get_stats = cpsw_ndo_get_stats, |
| .ndo_set_rx_mode = cpsw_ndo_set_rx_mode, |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| .ndo_poll_controller = cpsw_ndo_poll_controller, |
| #endif |
| .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid, |
| .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid, |
| }; |
| |
| static void cpsw_get_drvinfo(struct net_device *ndev, |
| struct ethtool_drvinfo *info) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| |
| strlcpy(info->driver, "TI CPSW Driver v1.0", sizeof(info->driver)); |
| strlcpy(info->version, "1.0", sizeof(info->version)); |
| strlcpy(info->bus_info, priv->pdev->name, sizeof(info->bus_info)); |
| } |
| |
| static u32 cpsw_get_msglevel(struct net_device *ndev) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| return priv->msg_enable; |
| } |
| |
| static void cpsw_set_msglevel(struct net_device *ndev, u32 value) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| priv->msg_enable = value; |
| } |
| |
| static int cpsw_get_ts_info(struct net_device *ndev, |
| struct ethtool_ts_info *info) |
| { |
| #ifdef CONFIG_TI_CPTS |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| |
| info->so_timestamping = |
| SOF_TIMESTAMPING_TX_HARDWARE | |
| SOF_TIMESTAMPING_TX_SOFTWARE | |
| SOF_TIMESTAMPING_RX_HARDWARE | |
| SOF_TIMESTAMPING_RX_SOFTWARE | |
| SOF_TIMESTAMPING_SOFTWARE | |
| SOF_TIMESTAMPING_RAW_HARDWARE; |
| info->phc_index = priv->cpts->phc_index; |
| info->tx_types = |
| (1 << HWTSTAMP_TX_OFF) | |
| (1 << HWTSTAMP_TX_ON); |
| info->rx_filters = |
| (1 << HWTSTAMP_FILTER_NONE) | |
| (1 << HWTSTAMP_FILTER_PTP_V2_EVENT); |
| #else |
| info->so_timestamping = |
| SOF_TIMESTAMPING_TX_SOFTWARE | |
| SOF_TIMESTAMPING_RX_SOFTWARE | |
| SOF_TIMESTAMPING_SOFTWARE; |
| info->phc_index = -1; |
| info->tx_types = 0; |
| info->rx_filters = 0; |
| #endif |
| return 0; |
| } |
| |
| static int cpsw_get_settings(struct net_device *ndev, |
| struct ethtool_cmd *ecmd) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| int slave_no = cpsw_slave_index(priv); |
| |
| if (priv->slaves[slave_no].phy) |
| return phy_ethtool_gset(priv->slaves[slave_no].phy, ecmd); |
| else |
| return -EOPNOTSUPP; |
| } |
| |
| static int cpsw_set_settings(struct net_device *ndev, struct ethtool_cmd *ecmd) |
| { |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| int slave_no = cpsw_slave_index(priv); |
| |
| if (priv->slaves[slave_no].phy) |
| return phy_ethtool_sset(priv->slaves[slave_no].phy, ecmd); |
| else |
| return -EOPNOTSUPP; |
| } |
| |
| static const struct ethtool_ops cpsw_ethtool_ops = { |
| .get_drvinfo = cpsw_get_drvinfo, |
| .get_msglevel = cpsw_get_msglevel, |
| .set_msglevel = cpsw_set_msglevel, |
| .get_link = ethtool_op_get_link, |
| .get_ts_info = cpsw_get_ts_info, |
| .get_settings = cpsw_get_settings, |
| .set_settings = cpsw_set_settings, |
| .get_coalesce = cpsw_get_coalesce, |
| .set_coalesce = cpsw_set_coalesce, |
| }; |
| |
| static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv, |
| u32 slave_reg_ofs, u32 sliver_reg_ofs) |
| { |
| void __iomem *regs = priv->regs; |
| int slave_num = slave->slave_num; |
| struct cpsw_slave_data *data = priv->data.slave_data + slave_num; |
| |
| slave->data = data; |
| slave->regs = regs + slave_reg_ofs; |
| slave->sliver = regs + sliver_reg_ofs; |
| slave->port_vlan = data->dual_emac_res_vlan; |
| } |
| |
| static int cpsw_probe_dt(struct cpsw_platform_data *data, |
| struct platform_device *pdev) |
| { |
| struct device_node *node = pdev->dev.of_node; |
| struct device_node *slave_node; |
| int i = 0, ret; |
| u32 prop; |
| |
| if (!node) |
| return -EINVAL; |
| |
| if (of_property_read_u32(node, "slaves", &prop)) { |
| pr_err("Missing slaves property in the DT.\n"); |
| return -EINVAL; |
| } |
| data->slaves = prop; |
| |
| if (of_property_read_u32(node, "active_slave", &prop)) { |
| pr_err("Missing active_slave property in the DT.\n"); |
| ret = -EINVAL; |
| goto error_ret; |
| } |
| data->active_slave = prop; |
| |
| if (of_property_read_u32(node, "cpts_clock_mult", &prop)) { |
| pr_err("Missing cpts_clock_mult property in the DT.\n"); |
| ret = -EINVAL; |
| goto error_ret; |
| } |
| data->cpts_clock_mult = prop; |
| |
| if (of_property_read_u32(node, "cpts_clock_shift", &prop)) { |
| pr_err("Missing cpts_clock_shift property in the DT.\n"); |
| ret = -EINVAL; |
| goto error_ret; |
| } |
| data->cpts_clock_shift = prop; |
| |
| data->slave_data = kcalloc(data->slaves, sizeof(struct cpsw_slave_data), |
| GFP_KERNEL); |
| if (!data->slave_data) |
| return -EINVAL; |
| |
| if (of_property_read_u32(node, "cpdma_channels", &prop)) { |
| pr_err("Missing cpdma_channels property in the DT.\n"); |
| ret = -EINVAL; |
| goto error_ret; |
| } |
| data->channels = prop; |
| |
| if (of_property_read_u32(node, "ale_entries", &prop)) { |
| pr_err("Missing ale_entries property in the DT.\n"); |
| ret = -EINVAL; |
| goto error_ret; |
| } |
| data->ale_entries = prop; |
| |
| if (of_property_read_u32(node, "bd_ram_size", &prop)) { |
| pr_err("Missing bd_ram_size property in the DT.\n"); |
| ret = -EINVAL; |
| goto error_ret; |
| } |
| data->bd_ram_size = prop; |
| |
| if (of_property_read_u32(node, "rx_descs", &prop)) { |
| pr_err("Missing rx_descs property in the DT.\n"); |
| ret = -EINVAL; |
| goto error_ret; |
| } |
| data->rx_descs = prop; |
| |
| if (of_property_read_u32(node, "mac_control", &prop)) { |
| pr_err("Missing mac_control property in the DT.\n"); |
| ret = -EINVAL; |
| goto error_ret; |
| } |
| data->mac_control = prop; |
| |
| if (!of_property_read_u32(node, "dual_emac", &prop)) |
| data->dual_emac = prop; |
| |
| /* |
| * Populate all the child nodes here... |
| */ |
| ret = of_platform_populate(node, NULL, NULL, &pdev->dev); |
| /* We do not want to force this, as in some cases may not have child */ |
| if (ret) |
| pr_warn("Doesn't have any child node\n"); |
| |
| for_each_node_by_name(slave_node, "slave") { |
| struct cpsw_slave_data *slave_data = data->slave_data + i; |
| const void *mac_addr = NULL; |
| u32 phyid; |
| int lenp; |
| const __be32 *parp; |
| struct device_node *mdio_node; |
| struct platform_device *mdio; |
| |
| parp = of_get_property(slave_node, "phy_id", &lenp); |
| if ((parp == NULL) && (lenp != (sizeof(void *) * 2))) { |
| pr_err("Missing slave[%d] phy_id property\n", i); |
| ret = -EINVAL; |
| goto error_ret; |
| } |
| mdio_node = of_find_node_by_phandle(be32_to_cpup(parp)); |
| phyid = be32_to_cpup(parp+1); |
| mdio = of_find_device_by_node(mdio_node); |
| snprintf(slave_data->phy_id, sizeof(slave_data->phy_id), |
| PHY_ID_FMT, mdio->name, phyid); |
| |
| mac_addr = of_get_mac_address(slave_node); |
| if (mac_addr) |
| memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN); |
| |
| if (data->dual_emac) { |
| if (of_property_read_u32(node, "dual_emac_res_vlan", |
| &prop)) { |
| pr_err("Missing dual_emac_res_vlan in DT.\n"); |
| slave_data->dual_emac_res_vlan = i+1; |
| pr_err("Using %d as Reserved VLAN for %d slave\n", |
| slave_data->dual_emac_res_vlan, i); |
| } else { |
| slave_data->dual_emac_res_vlan = prop; |
| } |
| } |
| |
| i++; |
| } |
| |
| return 0; |
| |
| error_ret: |
| kfree(data->slave_data); |
| return ret; |
| } |
| |
| static int cpsw_probe_dual_emac(struct platform_device *pdev, |
| struct cpsw_priv *priv) |
| { |
| struct cpsw_platform_data *data = &priv->data; |
| struct net_device *ndev; |
| struct cpsw_priv *priv_sl2; |
| int ret = 0, i; |
| |
| ndev = alloc_etherdev(sizeof(struct cpsw_priv)); |
| if (!ndev) { |
| pr_err("cpsw: error allocating net_device\n"); |
| return -ENOMEM; |
| } |
| |
| priv_sl2 = netdev_priv(ndev); |
| spin_lock_init(&priv_sl2->lock); |
| priv_sl2->data = *data; |
| priv_sl2->pdev = pdev; |
| priv_sl2->ndev = ndev; |
| priv_sl2->dev = &ndev->dev; |
| priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG); |
| priv_sl2->rx_packet_max = max(rx_packet_max, 128); |
| |
| if (is_valid_ether_addr(data->slave_data[1].mac_addr)) { |
| memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr, |
| ETH_ALEN); |
| pr_info("cpsw: Detected MACID = %pM\n", priv_sl2->mac_addr); |
| } else { |
| random_ether_addr(priv_sl2->mac_addr); |
| pr_info("cpsw: Random MACID = %pM\n", priv_sl2->mac_addr); |
| } |
| memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN); |
| |
| priv_sl2->slaves = priv->slaves; |
| priv_sl2->clk = priv->clk; |
| |
| priv_sl2->coal_intvl = 0; |
| priv_sl2->bus_freq_mhz = priv->bus_freq_mhz; |
| |
| priv_sl2->cpsw_res = priv->cpsw_res; |
| priv_sl2->regs = priv->regs; |
| priv_sl2->host_port = priv->host_port; |
| priv_sl2->host_port_regs = priv->host_port_regs; |
| priv_sl2->wr_regs = priv->wr_regs; |
| priv_sl2->dma = priv->dma; |
| priv_sl2->txch = priv->txch; |
| priv_sl2->rxch = priv->rxch; |
| priv_sl2->ale = priv->ale; |
| priv_sl2->emac_port = 1; |
| priv->slaves[1].ndev = ndev; |
| priv_sl2->cpts = priv->cpts; |
| priv_sl2->version = priv->version; |
| |
| for (i = 0; i < priv->num_irqs; i++) { |
| priv_sl2->irqs_table[i] = priv->irqs_table[i]; |
| priv_sl2->num_irqs = priv->num_irqs; |
| } |
| |
| ndev->features |= NETIF_F_HW_VLAN_FILTER; |
| |
| ndev->netdev_ops = &cpsw_netdev_ops; |
| SET_ETHTOOL_OPS(ndev, &cpsw_ethtool_ops); |
| netif_napi_add(ndev, &priv_sl2->napi, cpsw_poll, CPSW_POLL_WEIGHT); |
| |
| /* register the network device */ |
| SET_NETDEV_DEV(ndev, &pdev->dev); |
| ret = register_netdev(ndev); |
| if (ret) { |
| pr_err("cpsw: error registering net device\n"); |
| free_netdev(ndev); |
| ret = -ENODEV; |
| } |
| |
| return ret; |
| } |
| |
| static int cpsw_probe(struct platform_device *pdev) |
| { |
| struct cpsw_platform_data *data = pdev->dev.platform_data; |
| struct net_device *ndev; |
| struct cpsw_priv *priv; |
| struct cpdma_params dma_params; |
| struct cpsw_ale_params ale_params; |
| void __iomem *ss_regs, *wr_regs; |
| struct resource *res; |
| u32 slave_offset, sliver_offset, slave_size; |
| int ret = 0, i, k = 0; |
| |
| ndev = alloc_etherdev(sizeof(struct cpsw_priv)); |
| if (!ndev) { |
| pr_err("error allocating net_device\n"); |
| return -ENOMEM; |
| } |
| |
| platform_set_drvdata(pdev, ndev); |
| priv = netdev_priv(ndev); |
| spin_lock_init(&priv->lock); |
| priv->pdev = pdev; |
| priv->ndev = ndev; |
| priv->dev = &ndev->dev; |
| priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG); |
| priv->rx_packet_max = max(rx_packet_max, 128); |
| priv->cpts = devm_kzalloc(&pdev->dev, sizeof(struct cpts), GFP_KERNEL); |
| if (!ndev) { |
| pr_err("error allocating cpts\n"); |
| goto clean_ndev_ret; |
| } |
| |
| /* |
| * This may be required here for child devices. |
| */ |
| pm_runtime_enable(&pdev->dev); |
| |
| if (cpsw_probe_dt(&priv->data, pdev)) { |
| pr_err("cpsw: platform data missing\n"); |
| ret = -ENODEV; |
| goto clean_ndev_ret; |
| } |
| data = &priv->data; |
| |
| if (is_valid_ether_addr(data->slave_data[0].mac_addr)) { |
| memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN); |
| pr_info("Detected MACID = %pM", priv->mac_addr); |
| } else { |
| eth_random_addr(priv->mac_addr); |
| pr_info("Random MACID = %pM", priv->mac_addr); |
| } |
| |
| memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN); |
| |
| priv->slaves = kzalloc(sizeof(struct cpsw_slave) * data->slaves, |
| GFP_KERNEL); |
| if (!priv->slaves) { |
| ret = -EBUSY; |
| goto clean_ndev_ret; |
| } |
| for (i = 0; i < data->slaves; i++) |
| priv->slaves[i].slave_num = i; |
| |
| priv->slaves[0].ndev = ndev; |
| priv->emac_port = 0; |
| |
| priv->clk = clk_get(&pdev->dev, "fck"); |
| if (IS_ERR(priv->clk)) { |
| dev_err(&pdev->dev, "fck is not found\n"); |
| ret = -ENODEV; |
| goto clean_slave_ret; |
| } |
| priv->coal_intvl = 0; |
| priv->bus_freq_mhz = clk_get_rate(priv->clk) / 1000000; |
| |
| priv->cpsw_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| if (!priv->cpsw_res) { |
| dev_err(priv->dev, "error getting i/o resource\n"); |
| ret = -ENOENT; |
| goto clean_clk_ret; |
| } |
| if (!request_mem_region(priv->cpsw_res->start, |
| resource_size(priv->cpsw_res), ndev->name)) { |
| dev_err(priv->dev, "failed request i/o region\n"); |
| ret = -ENXIO; |
| goto clean_clk_ret; |
| } |
| ss_regs = ioremap(priv->cpsw_res->start, resource_size(priv->cpsw_res)); |
| if (!ss_regs) { |
| dev_err(priv->dev, "unable to map i/o region\n"); |
| goto clean_cpsw_iores_ret; |
| } |
| priv->regs = ss_regs; |
| priv->version = __raw_readl(&priv->regs->id_ver); |
| priv->host_port = HOST_PORT_NUM; |
| |
| priv->cpsw_wr_res = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| if (!priv->cpsw_wr_res) { |
| dev_err(priv->dev, "error getting i/o resource\n"); |
| ret = -ENOENT; |
| goto clean_iomap_ret; |
| } |
| if (!request_mem_region(priv->cpsw_wr_res->start, |
| resource_size(priv->cpsw_wr_res), ndev->name)) { |
| dev_err(priv->dev, "failed request i/o region\n"); |
| ret = -ENXIO; |
| goto clean_iomap_ret; |
| } |
| wr_regs = ioremap(priv->cpsw_wr_res->start, |
| resource_size(priv->cpsw_wr_res)); |
| if (!wr_regs) { |
| dev_err(priv->dev, "unable to map i/o region\n"); |
| goto clean_cpsw_wr_iores_ret; |
| } |
| priv->wr_regs = wr_regs; |
| |
| memset(&dma_params, 0, sizeof(dma_params)); |
| memset(&ale_params, 0, sizeof(ale_params)); |
| |
| switch (priv->version) { |
| case CPSW_VERSION_1: |
| priv->host_port_regs = ss_regs + CPSW1_HOST_PORT_OFFSET; |
| priv->cpts->reg = ss_regs + CPSW1_CPTS_OFFSET; |
| dma_params.dmaregs = ss_regs + CPSW1_CPDMA_OFFSET; |
| dma_params.txhdp = ss_regs + CPSW1_STATERAM_OFFSET; |
| ale_params.ale_regs = ss_regs + CPSW1_ALE_OFFSET; |
| slave_offset = CPSW1_SLAVE_OFFSET; |
| slave_size = CPSW1_SLAVE_SIZE; |
| sliver_offset = CPSW1_SLIVER_OFFSET; |
| dma_params.desc_mem_phys = 0; |
| break; |
| case CPSW_VERSION_2: |
| priv->host_port_regs = ss_regs + CPSW2_HOST_PORT_OFFSET; |
| priv->cpts->reg = ss_regs + CPSW2_CPTS_OFFSET; |
| dma_params.dmaregs = ss_regs + CPSW2_CPDMA_OFFSET; |
| dma_params.txhdp = ss_regs + CPSW2_STATERAM_OFFSET; |
| ale_params.ale_regs = ss_regs + CPSW2_ALE_OFFSET; |
| slave_offset = CPSW2_SLAVE_OFFSET; |
| slave_size = CPSW2_SLAVE_SIZE; |
| sliver_offset = CPSW2_SLIVER_OFFSET; |
| dma_params.desc_mem_phys = |
| (u32 __force) priv->cpsw_res->start + CPSW2_BD_OFFSET; |
| break; |
| default: |
| dev_err(priv->dev, "unknown version 0x%08x\n", priv->version); |
| ret = -ENODEV; |
| goto clean_cpsw_wr_iores_ret; |
| } |
| for (i = 0; i < priv->data.slaves; i++) { |
| struct cpsw_slave *slave = &priv->slaves[i]; |
| cpsw_slave_init(slave, priv, slave_offset, sliver_offset); |
| slave_offset += slave_size; |
| sliver_offset += SLIVER_SIZE; |
| } |
| |
| dma_params.dev = &pdev->dev; |
| dma_params.rxthresh = dma_params.dmaregs + CPDMA_RXTHRESH; |
| dma_params.rxfree = dma_params.dmaregs + CPDMA_RXFREE; |
| dma_params.rxhdp = dma_params.txhdp + CPDMA_RXHDP; |
| dma_params.txcp = dma_params.txhdp + CPDMA_TXCP; |
| dma_params.rxcp = dma_params.txhdp + CPDMA_RXCP; |
| |
| dma_params.num_chan = data->channels; |
| dma_params.has_soft_reset = true; |
| dma_params.min_packet_size = CPSW_MIN_PACKET_SIZE; |
| dma_params.desc_mem_size = data->bd_ram_size; |
| dma_params.desc_align = 16; |
| dma_params.has_ext_regs = true; |
| dma_params.desc_hw_addr = dma_params.desc_mem_phys; |
| |
| priv->dma = cpdma_ctlr_create(&dma_params); |
| if (!priv->dma) { |
| dev_err(priv->dev, "error initializing dma\n"); |
| ret = -ENOMEM; |
| goto clean_wr_iomap_ret; |
| } |
| |
| priv->txch = cpdma_chan_create(priv->dma, tx_chan_num(0), |
| cpsw_tx_handler); |
| priv->rxch = cpdma_chan_create(priv->dma, rx_chan_num(0), |
| cpsw_rx_handler); |
| |
| if (WARN_ON(!priv->txch || !priv->rxch)) { |
| dev_err(priv->dev, "error initializing dma channels\n"); |
| ret = -ENOMEM; |
| goto clean_dma_ret; |
| } |
| |
| ale_params.dev = &ndev->dev; |
| ale_params.ale_ageout = ale_ageout; |
| ale_params.ale_entries = data->ale_entries; |
| ale_params.ale_ports = data->slaves; |
| |
| priv->ale = cpsw_ale_create(&ale_params); |
| if (!priv->ale) { |
| dev_err(priv->dev, "error initializing ale engine\n"); |
| ret = -ENODEV; |
| goto clean_dma_ret; |
| } |
| |
| ndev->irq = platform_get_irq(pdev, 0); |
| if (ndev->irq < 0) { |
| dev_err(priv->dev, "error getting irq resource\n"); |
| ret = -ENOENT; |
| goto clean_ale_ret; |
| } |
| |
| while ((res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, k))) { |
| for (i = res->start; i <= res->end; i++) { |
| if (request_irq(i, cpsw_interrupt, IRQF_DISABLED, |
| dev_name(&pdev->dev), priv)) { |
| dev_err(priv->dev, "error attaching irq\n"); |
| goto clean_ale_ret; |
| } |
| priv->irqs_table[k] = i; |
| priv->num_irqs = k; |
| } |
| k++; |
| } |
| |
| ndev->features |= NETIF_F_HW_VLAN_FILTER; |
| |
| ndev->netdev_ops = &cpsw_netdev_ops; |
| SET_ETHTOOL_OPS(ndev, &cpsw_ethtool_ops); |
| netif_napi_add(ndev, &priv->napi, cpsw_poll, CPSW_POLL_WEIGHT); |
| |
| /* register the network device */ |
| SET_NETDEV_DEV(ndev, &pdev->dev); |
| ret = register_netdev(ndev); |
| if (ret) { |
| dev_err(priv->dev, "error registering net device\n"); |
| ret = -ENODEV; |
| goto clean_irq_ret; |
| } |
| |
| if (cpts_register(&pdev->dev, priv->cpts, |
| data->cpts_clock_mult, data->cpts_clock_shift)) |
| dev_err(priv->dev, "error registering cpts device\n"); |
| |
| cpsw_notice(priv, probe, "initialized device (regs %x, irq %d)\n", |
| priv->cpsw_res->start, ndev->irq); |
| |
| if (priv->data.dual_emac) { |
| ret = cpsw_probe_dual_emac(pdev, priv); |
| if (ret) { |
| cpsw_err(priv, probe, "error probe slave 2 emac interface\n"); |
| goto clean_irq_ret; |
| } |
| } |
| |
| return 0; |
| |
| clean_irq_ret: |
| free_irq(ndev->irq, priv); |
| clean_ale_ret: |
| cpsw_ale_destroy(priv->ale); |
| clean_dma_ret: |
| cpdma_chan_destroy(priv->txch); |
| cpdma_chan_destroy(priv->rxch); |
| cpdma_ctlr_destroy(priv->dma); |
| clean_wr_iomap_ret: |
| iounmap(priv->wr_regs); |
| clean_cpsw_wr_iores_ret: |
| release_mem_region(priv->cpsw_wr_res->start, |
| resource_size(priv->cpsw_wr_res)); |
| clean_iomap_ret: |
| iounmap(priv->regs); |
| clean_cpsw_iores_ret: |
| release_mem_region(priv->cpsw_res->start, |
| resource_size(priv->cpsw_res)); |
| clean_clk_ret: |
| clk_put(priv->clk); |
| clean_slave_ret: |
| pm_runtime_disable(&pdev->dev); |
| kfree(priv->slaves); |
| clean_ndev_ret: |
| free_netdev(ndev); |
| return ret; |
| } |
| |
| static int cpsw_remove(struct platform_device *pdev) |
| { |
| struct net_device *ndev = platform_get_drvdata(pdev); |
| struct cpsw_priv *priv = netdev_priv(ndev); |
| |
| pr_info("removing device"); |
| platform_set_drvdata(pdev, NULL); |
| |
| cpts_unregister(priv->cpts); |
| free_irq(ndev->irq, priv); |
| cpsw_ale_destroy(priv->ale); |
| cpdma_chan_destroy(priv->txch); |
| cpdma_chan_destroy(priv->rxch); |
| cpdma_ctlr_destroy(priv->dma); |
| iounmap(priv->regs); |
| release_mem_region(priv->cpsw_res->start, |
| resource_size(priv->cpsw_res)); |
| iounmap(priv->wr_regs); |
| release_mem_region(priv->cpsw_wr_res->start, |
| resource_size(priv->cpsw_wr_res)); |
| pm_runtime_disable(&pdev->dev); |
| clk_put(priv->clk); |
| kfree(priv->slaves); |
| free_netdev(ndev); |
| |
| return 0; |
| } |
| |
| static int cpsw_suspend(struct device *dev) |
| { |
| struct platform_device *pdev = to_platform_device(dev); |
| struct net_device *ndev = platform_get_drvdata(pdev); |
| |
| if (netif_running(ndev)) |
| cpsw_ndo_stop(ndev); |
| pm_runtime_put_sync(&pdev->dev); |
| |
| return 0; |
| } |
| |
| static int cpsw_resume(struct device *dev) |
| { |
| struct platform_device *pdev = to_platform_device(dev); |
| struct net_device *ndev = platform_get_drvdata(pdev); |
| |
| pm_runtime_get_sync(&pdev->dev); |
| if (netif_running(ndev)) |
| cpsw_ndo_open(ndev); |
| return 0; |
| } |
| |
| static const struct dev_pm_ops cpsw_pm_ops = { |
| .suspend = cpsw_suspend, |
| .resume = cpsw_resume, |
| }; |
| |
| static const struct of_device_id cpsw_of_mtable[] = { |
| { .compatible = "ti,cpsw", }, |
| { /* sentinel */ }, |
| }; |
| |
| static struct platform_driver cpsw_driver = { |
| .driver = { |
| .name = "cpsw", |
| .owner = THIS_MODULE, |
| .pm = &cpsw_pm_ops, |
| .of_match_table = of_match_ptr(cpsw_of_mtable), |
| }, |
| .probe = cpsw_probe, |
| .remove = cpsw_remove, |
| }; |
| |
| static int __init cpsw_init(void) |
| { |
| return platform_driver_register(&cpsw_driver); |
| } |
| late_initcall(cpsw_init); |
| |
| static void __exit cpsw_exit(void) |
| { |
| platform_driver_unregister(&cpsw_driver); |
| } |
| module_exit(cpsw_exit); |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>"); |
| MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>"); |
| MODULE_DESCRIPTION("TI CPSW Ethernet driver"); |